h2{
    text-align: center;
}
div{
    color: gray;
    font-size: 12px;
    text-align: center;
}
p{
    text-indent: 2em;
}
a{
    text-decoration: none;
}
body{
    font: 16px/28px "微软雅黑";
}
.img{
    text-align: center;
}